add contraction

Signed-off-by: fria <[email protected]>

docs/ai-chat.md

@@ -62,7 +62,7 @@ To help you choose a model that fits your needs, you can look at leaderboards an
 
 ![Kobold.cpp Logo](assets/img/ai-chat/kobold.png){align=right}
 
-Kobold.cpp is an AI client that runs locally on your Windows, Mac, or Linux computer. It is an excellent choice if you are looking for heavy customization and tweaking, such as for role-playing purposes.
+Kobold.cpp is an AI client that runs locally on your Windows, Mac, or Linux computer. It's an excellent choice if you are looking for heavy customization and tweaking, such as for role-playing purposes.
 
 In addition to supporting a large range of text models, Kobold.cpp also supports image generators such as [Stable Diffusion](https://stability.ai/stable-image) and automatic speech recognition tools such as [Whisper](https://github.com/ggerganov/whisper.cpp).